US631688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valved coupling for train-pipes.
Assignee: JOHN H STEPHENS
•
Filing: 1899-06-10
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Granted: 1899-08-22
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Expires: 1919-06-10
Abstract
No abstract record available.
Inventors
- 👤 Win D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:06
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; F16L37/32; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1902-08-22 | 1903-02-21 | 1903-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-08-22 | 1907-02-21 | 1907-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-08-22 | 1911-02-21 | 1911-08-23 | $7700.00 | Window Closed / Lapsed |